Coffee brewing machine, and coffee brewing device and coffee brewing method thereof

The invention discloses a coffee brewing machine, and a coffee brewing device and a coffee brewing method thereof. The coffee brewing machine comprises a driving device and the coffee brewing device,wherein the coffee brewing device comprises a brewing container with a brewing chamber, a knife holder detachably combined on the brewing container and capable of being driven by the driving device togrind coffee beans, a filtering seat and a first mounting unit, wherein the first mounting unit is used for erecting the filtering seat in the brewing chamber; and the filtering seat is provided witha filtering space. The brewing method comprises the steps of placing coffee beans in the filtering space, combining the knife holder on the brewing container, driving the knife holder to rotate by the driving device to grind the coffee beans, separating the knife holder and the brewing container, and brewing the coffee powder with hot water. In the process of making the coffee beverage, coffee beans and coffee powder are p